A class of P,T-invariant topological phases of interacting electrons

@article{Freedman2004ACO,
  title={A class of P,T-invariant topological phases of interacting electrons},
  author={Michael H. Freedman and C. Nayak and Kirill Shtengel and Kevin Walker and Zhenghan Wang},
  journal={Annals of Physics},
  year={2004},
  volume={310},
  pages={428-492}
}
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